asp.net-core - ASP.NET Core 3 Blazor : Run on localhost of server ok, 但在服务器外部运行错误:WebSocket 握手期间出错:意外的响应代码:200

Question

我正在使用 .NET Core 3.0.0、Blazor 服务器端、Visual Studio 2019、Windows Server 2016。我在服务器上运行正常，但来自外部服务器的连接出现错误。

我使用 Apache HTTP Web 服务器 2.4 虚拟主机 ( http://httpd.apache.org/docs/2.4/vhosts/ )，文件 httpd-vhosts.conf

<VirtualHost *:80>
    ProxyPreserveHost On
    ProxyPass / http://127.0.0.1:5000/
    ProxyPassReverse / http://127.0.0.1:5000/
    ServerName demo.example.com
    ErrorLog ${APACHE_LOG_DIR}webapp1-error.log
    CustomLog ${APACHE_LOG_DIR}webapp1-access.log common
</VirtualHost>

在 httpd.conf 中，启用模块: proxy 、 proxy_httpd 、 proxy_wstunnel 和

<VirtualHost *:80>
  ServerName demo.example.com

  RewriteEngine On
  RewriteCond %{REQUEST_URI}  ^/demo.example.com            [NC]
  RewriteCond %{QUERY_STRING} transport=websocket    [NC]
  RewriteRule /(.*)           ws://localhost:5000/$1 [P,L]

  ProxyPass / http://localhost:5000/
  ProxyPassReverse / http://localhost:5000/
</VirtualHost>

这个错误

blazor.server.js:1 WebSocket connection to 'ws://demo.xxxx.xx/_blazor?id=LZk17pmIejWGHLkhN3HFmA' failed: Error during WebSocket handshake: Unexpected response code: 200

Answer 1

似乎其他人在代理 Web 套接字连接时遇到问题。在这里为您找到了一个潜在的解决方案:https://github.com/aspnet/Blazor/issues/1882

<VirtualHost *:80>
ServerName www.domain.com
ProxyPreserveHost On
ProxyPass / http://127.0.0.1:5000/
ProxyPassReverse / http://127.0.0.1:5000/

RewriteEngine on
RewriteCond %{HTTP:UPGRADE} ^WebSocket$ [NC]
RewriteCond %{HTTP:CONNECTION} Upgrade$ [NC]
RewriteRule /(.*) ws://127.0.0.1:5000/$1 [P]

ErrorLog /.log
CustomLog /.log common